Pull up bar



FIG. 1 is a perspective view of a pull up bar showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is an enlarged view of portion 8 shown in FIG. 1; and,

FIG. 9 is an enlarged view of portion 9 shown in FIG. 3.

The broken lines in the drawings depict portions of the pull up bar thatform no part of the claimed design.

CLAIM The ornamental design for a pull up bar, as shown and described.